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<h1 id="sec_name">
<span data-if="hdevelop" style="display:inline;">disp_image</span><span data-if="c" style="display:none;">T_disp_image</span><span data-if="cpp" style="display:none;">DispImage</span><span data-if="dotnet" style="display:none;">DispImage</span><span data-if="python" style="display:none;">disp_image</span> (算子名称)</h1>
<h2>名称</h2>
<p><code><span data-if="hdevelop" style="display:inline;">disp_image</span><span data-if="c" style="display:none;">T_disp_image</span><span data-if="cpp" style="display:none;">DispImage</span><span data-if="dotnet" style="display:none;">DispImage</span><span data-if="python" style="display:none;">disp_image</span></code> — Displays gray value images.</p>
<h2 id="sec_synopsis">参数签名</h2>
<div data-if="hdevelop" style="display:inline;">
<p>
<code><b>disp_image</b>(<a href="#Image"><i>Image</i></a> :  : <a href="#WindowHandle"><i>WindowHandle</i></a> : )</code></p>
</div>
<div data-if="c" style="display:none;">
<p>
<code>Herror <b>T_disp_image</b>(const Hobject <a href="#Image"><i>Image</i></a>, const Htuple <a href="#WindowHandle"><i>WindowHandle</i></a>)</code></p>
</div>
<div data-if="cpp" style="display:none;">
<p>
<code>void <b>DispImage</b>(const HObject&amp; <a href="#Image"><i>Image</i></a>, const HTuple&amp; <a href="#WindowHandle"><i>WindowHandle</i></a>)</code></p>
<p>
<code>void <a href="HImage.html">HImage</a>::<b>DispImage</b>(const HWindow&amp; <a href="#WindowHandle"><i>WindowHandle</i></a>) const</code></p>
<p>
<code>void <a href="HWindow.html">HWindow</a>::<b>DispImage</b>(const HImage&amp; <a href="#Image"><i>Image</i></a>) const</code></p>
</div>
<div data-if="com" style="display:none;"></div>
<div data-if="dotnet" style="display:none;">
<p>
<code>static void <a href="HOperatorSet.html">HOperatorSet</a>.<b>DispImage</b>(<a href="HObject.html">HObject</a> <a href="#Image"><i>image</i></a>, <a href="HTuple.html">HTuple</a> <a href="#WindowHandle"><i>windowHandle</i></a>)</code></p>
<p>
<code>void <a href="HImage.html">HImage</a>.<b>DispImage</b>(<a href="HWindow.html">HWindow</a> <a href="#WindowHandle"><i>windowHandle</i></a>)</code></p>
<p>
<code>void <a href="HWindow.html">HWindow</a>.<b>DispImage</b>(<a href="HImage.html">HImage</a> <a href="#Image"><i>image</i></a>)</code></p>
</div>
<div data-if="python" style="display:none;">
<p>
<code>def <b>disp_image</b>(<a href="#Image"><i>image</i></a>: HObject, <a href="#WindowHandle"><i>window_handle</i></a>: HHandle) -&gt; None</code></p>
</div>
<h2 id="sec_description">描述</h2>
<p><code><span data-if="hdevelop" style="display:inline">disp_image</span><span data-if="c" style="display:none">disp_image</span><span data-if="cpp" style="display:none">DispImage</span><span data-if="com" style="display:none">DispImage</span><span data-if="dotnet" style="display:none">DispImage</span><span data-if="python" style="display:none">disp_image</span></code> displays the gray values of an image in the
output window. The gray value pixels of the definition domain
(<a href="set_comprise.html"><code><span data-if="hdevelop" style="display:inline">set_comprise(::WindowHandle,'object':)</span><span data-if="c" style="display:none">set_comprise(WindowHandle,"object")</span><span data-if="cpp" style="display:none">SetComprise(WindowHandle,"object")</span><span data-if="com" style="display:none">SetComprise(WindowHandle,"object")</span><span data-if="dotnet" style="display:none">SetComprise(WindowHandle,"object")</span><span data-if="python" style="display:none">set_comprise(WindowHandle,"object")</span></code></a>) or of the whole image
(<a href="set_comprise.html"><code><span data-if="hdevelop" style="display:inline">set_comprise(::WindowHandle,'image':)</span><span data-if="c" style="display:none">set_comprise(WindowHandle,"image")</span><span data-if="cpp" style="display:none">SetComprise(WindowHandle,"image")</span><span data-if="com" style="display:none">SetComprise(WindowHandle,"image")</span><span data-if="dotnet" style="display:none">SetComprise(WindowHandle,"image")</span><span data-if="python" style="display:none">set_comprise(WindowHandle,"image")</span></code></a>) are used. Restriction to the
definition domain is the default.
</p>
<p>For the display of gray value images the number of gray values is usually
reduced. This is due to the fact that colors have to be reserved for the
display of graphics (e.g., <a href="set_color.html"><code><span data-if="hdevelop" style="display:inline">set_color</span><span data-if="c" style="display:none">set_color</span><span data-if="cpp" style="display:none">SetColor</span><span data-if="com" style="display:none">SetColor</span><span data-if="dotnet" style="display:none">SetColor</span><span data-if="python" style="display:none">set_color</span></code></a>) and the window manager.
Also depending on the number of bit planes on the used output device often
less than 256 colors (eight bit planes) are available. The number of
”colors” actually reserved for the display of gray values can be queried
by <a href="get_system.html"><code><span data-if="hdevelop" style="display:inline">get_system</span><span data-if="c" style="display:none">get_system</span><span data-if="cpp" style="display:none">GetSystem</span><span data-if="com" style="display:none">GetSystem</span><span data-if="dotnet" style="display:none">GetSystem</span><span data-if="python" style="display:none">get_system</span></code></a>. Before opening the first window this value can be
modified by <a href="set_system.html"><code><span data-if="hdevelop" style="display:inline">set_system</span><span data-if="c" style="display:none">set_system</span><span data-if="cpp" style="display:none">SetSystem</span><span data-if="com" style="display:none">SetSystem</span><span data-if="dotnet" style="display:none">SetSystem</span><span data-if="python" style="display:none">set_system</span></code></a>. For instance for 8 bit planes 200 real
gray values are the default.
</p>
<p>The reduction of the number of gray values does not pose problems as long
as only gray value information is displayed, humans cannot distinguish
256 different shades of gray. If certain gray values are used for the
representation of region information (which is not the style commonly used
in HALCON), confusions might be the result, since different
numerical values are displayed on the screen with the same gray
value. 该算子 <a href="label_to_region.html"><code><span data-if="hdevelop" style="display:inline">label_to_region</span><span data-if="c" style="display:none">label_to_region</span><span data-if="cpp" style="display:none">LabelToRegion</span><span data-if="com" style="display:none">LabelToRegion</span><span data-if="dotnet" style="display:none">LabelToRegion</span><span data-if="python" style="display:none">label_to_region</span></code></a> should be used on
these images in order to transform the label data into HALCON objects.
</p>
<p>If images of type <code>int2</code>, <code>int4</code>, <code>int8</code>, <code>real</code>
or <code>complex</code> are displayed, the smallest and largest gray value is
computed. For images of the type <code>complex</code> this computation is based
on the corresponding power spectrum.
Afterwards the pixel data is rescaled according to the
number of available gray values (depending on the output device, e.g., 200).
It is possible that some pixels have a very different value than
the other pixels. This might lead to the display of an (almost)
completely white or black image.
In order to decide if the current image is a binary image
<a href="min_max_gray.html"><code><span data-if="hdevelop" style="display:inline">min_max_gray</span><span data-if="c" style="display:none">min_max_gray</span><span data-if="cpp" style="display:none">MinMaxGray</span><span data-if="com" style="display:none">MinMaxGray</span><span data-if="dotnet" style="display:none">MinMaxGray</span><span data-if="python" style="display:none">min_max_gray</span></code></a> can be used. If necessary the image can be
transformed or converted by <a href="scale_image.html"><code><span data-if="hdevelop" style="display:inline">scale_image</span><span data-if="c" style="display:none">scale_image</span><span data-if="cpp" style="display:none">ScaleImage</span><span data-if="com" style="display:none">ScaleImage</span><span data-if="dotnet" style="display:none">ScaleImage</span><span data-if="python" style="display:none">scale_image</span></code></a> and
<a href="convert_image_type.html"><code><span data-if="hdevelop" style="display:inline">convert_image_type</span><span data-if="c" style="display:none">convert_image_type</span><span data-if="cpp" style="display:none">ConvertImageType</span><span data-if="com" style="display:none">ConvertImageType</span><span data-if="dotnet" style="display:none">ConvertImageType</span><span data-if="python" style="display:none">convert_image_type</span></code></a> before it is displayed.</p>
<h2 id="sec_attention">注意</h2>
<p>If a wrong output mode was set by <a href="set_paint.html"><code><span data-if="hdevelop" style="display:inline">set_paint</span><span data-if="c" style="display:none">set_paint</span><span data-if="cpp" style="display:none">SetPaint</span><span data-if="com" style="display:none">SetPaint</span><span data-if="dotnet" style="display:none">SetPaint</span><span data-if="python" style="display:none">set_paint</span></code></a>, the error will be
reported when <code><span data-if="hdevelop" style="display:inline">disp_image</span><span data-if="c" style="display:none">disp_image</span><span data-if="cpp" style="display:none">DispImage</span><span data-if="com" style="display:none">DispImage</span><span data-if="dotnet" style="display:none">DispImage</span><span data-if="python" style="display:none">disp_image</span></code> is used.</p>
<h2 id="sec_execution">运行信息</h2>
<ul>
  <li>多线程类型:可重入(与非独占操作符并行运行)。</li>
<li>多线程作用域:全局(可以从任何线程调用)。</li>
  <li>未经并行化处理。</li>
</ul>
<h2 id="sec_parameters">参数表</h2>
  <div class="par">
<div class="parhead">
<span id="Image" class="parname"><b><code><span data-if="hdevelop" style="display:inline">Image</span><span data-if="c" style="display:none">Image</span><span data-if="cpp" style="display:none">Image</span><span data-if="com" style="display:none">Image</span><span data-if="dotnet" style="display:none">image</span><span data-if="python" style="display:none">image</span></code></b> (input_object)  </span><span>singlechannelimage <code>→</code> <span data-if="hdevelop" style="display:inline">object</span><span data-if="dotnet" style="display:none"><a href="HImage.html">HImage</a></span><span data-if="python" style="display:none">HObject</span><span data-if="cpp" style="display:none"><a href="HImage.html">HImage</a></span><span data-if="c" style="display:none">Hobject</span> (byte / direction / cyclic / int1 / int2 / uint2 / int4 / int8 / real / complex / vector_field)</span>
</div>
<p class="pardesc">Gray value image to display.</p>
</div>
  <div class="par">
<div class="parhead">
<span id="WindowHandle" class="parname"><b><code><span data-if="hdevelop" style="display:inline">WindowHandle</span><span data-if="c" style="display:none">WindowHandle</span><span data-if="cpp" style="display:none">WindowHandle</span><span data-if="com" style="display:none">WindowHandle</span><span data-if="dotnet" style="display:none">windowHandle</span><span data-if="python" style="display:none">window_handle</span></code></b> (input_control)  </span><span>window <code>→</code> <span data-if="dotnet" style="display:none"><a href="HWindow.html">HWindow</a>, </span><span data-if="dotnet" style="display:none"><a href="HTuple.html">HTuple</a></span><span data-if="python" style="display:none">HHandle</span><span data-if="cpp" style="display:none"><a href="HTuple.html">HTuple</a></span><span data-if="c" style="display:none">Htuple</span><span data-if="hdevelop" style="display:inline"> (handle)</span><span data-if="dotnet" style="display:none"> (<i>IntPtr</i>)</span><span data-if="cpp" style="display:none"> (<i>HHandle</i>)</span><span data-if="c" style="display:none"> (<i>handle</i>)</span></span>
</div>
<p class="pardesc">Window handle.</p>
</div>
<div data-if="hdevelop" style="display:inline">
<h2 id="sec_example_hdevelop">例程 (HDevelop)</h2>
<pre class="example">
* Output of a gray image:
read_image(Image,'monkey')
disp_image(Image,WindowHandle)
</pre>
</div>
<div data-if="c" style="display:none">
<h2 id="sec_example_c">例程 (C)</h2>
<pre class="example">
/* Output of a gray image: */
read_image(&amp;Image,"monkey");
T_disp_image(Image,WindowHandle);
</pre>
</div>
<div data-if="cpp" style="display:none">
<h2 id="sec_example_cpp">例程 (HDevelop)</h2>
<pre class="example">
* Output of a gray image:
read_image(Image,'monkey')
disp_image(Image,WindowHandle)
</pre>
</div>
<div data-if="com" style="display:none">
<h2 id="sec_example_com">例程 (HDevelop)</h2>
<pre class="example">
* Output of a gray image:
read_image(Image,'monkey')
disp_image(Image,WindowHandle)
</pre>
</div>
<div data-if="dotnet" style="display:none">
<h2 id="sec_example_dotnet">例程 (HDevelop)</h2>
<pre class="example">
* Output of a gray image:
read_image(Image,'monkey')
disp_image(Image,WindowHandle)
</pre>
</div>
<h2 id="sec_result">结果</h2>
<p>If the used image contains valid values and a correct
output mode is set, <code><span data-if="hdevelop" style="display:inline">disp_image</span><span data-if="c" style="display:none">disp_image</span><span data-if="cpp" style="display:none">DispImage</span><span data-if="com" style="display:none">DispImage</span><span data-if="dotnet" style="display:none">DispImage</span><span data-if="python" style="display:none">disp_image</span></code> returns <TT>2</TT> (
      <TT>H_MSG_TRUE</TT>)
    . Otherwise an
exception is raised.</p>
<h2 id="sec_predecessors">可能的前置算子</h2>
<p>
<code><a href="open_window.html"><span data-if="hdevelop" style="display:inline">open_window</span><span data-if="c" style="display:none">open_window</span><span data-if="cpp" style="display:none">OpenWindow</span><span data-if="com" style="display:none">OpenWindow</span><span data-if="dotnet" style="display:none">OpenWindow</span><span data-if="python" style="display:none">open_window</span></a></code>, 
<code><a href="set_rgb.html"><span data-if="hdevelop" style="display:inline">set_rgb</span><span data-if="c" style="display:none">set_rgb</span><span data-if="cpp" style="display:none">SetRgb</span><span data-if="com" style="display:none">SetRgb</span><span data-if="dotnet" style="display:none">SetRgb</span><span data-if="python" style="display:none">set_rgb</span></a></code>, 
<code><a href="set_lut.html"><span data-if="hdevelop" style="display:inline">set_lut</span><span data-if="c" style="display:none">set_lut</span><span data-if="cpp" style="display:none">SetLut</span><span data-if="com" style="display:none">SetLut</span><span data-if="dotnet" style="display:none">SetLut</span><span data-if="python" style="display:none">set_lut</span></a></code>, 
<code><a href="set_hsi.html"><span data-if="hdevelop" style="display:inline">set_hsi</span><span data-if="c" style="display:none">set_hsi</span><span data-if="cpp" style="display:none">SetHsi</span><span data-if="com" style="display:none">SetHsi</span><span data-if="dotnet" style="display:none">SetHsi</span><span data-if="python" style="display:none">set_hsi</span></a></code>, 
<code><a href="scale_image.html"><span data-if="hdevelop" style="display:inline">scale_image</span><span data-if="c" style="display:none">scale_image</span><span data-if="cpp" style="display:none">ScaleImage</span><span data-if="com" style="display:none">ScaleImage</span><span data-if="dotnet" style="display:none">ScaleImage</span><span data-if="python" style="display:none">scale_image</span></a></code>, 
<code><a href="convert_image_type.html"><span data-if="hdevelop" style="display:inline">convert_image_type</span><span data-if="c" style="display:none">convert_image_type</span><span data-if="cpp" style="display:none">ConvertImageType</span><span data-if="com" style="display:none">ConvertImageType</span><span data-if="dotnet" style="display:none">ConvertImageType</span><span data-if="python" style="display:none">convert_image_type</span></a></code>, 
<code><a href="min_max_gray.html"><span data-if="hdevelop" style="display:inline">min_max_gray</span><span data-if="c" style="display:none">min_max_gray</span><span data-if="cpp" style="display:none">MinMaxGray</span><span data-if="com" style="display:none">MinMaxGray</span><span data-if="dotnet" style="display:none">MinMaxGray</span><span data-if="python" style="display:none">min_max_gray</span></a></code>
</p>
<h2 id="sec_alternatives">可替代算子</h2>
<p>
<code><a href="disp_obj.html"><span data-if="hdevelop" style="display:inline">disp_obj</span><span data-if="c" style="display:none">disp_obj</span><span data-if="cpp" style="display:none">DispObj</span><span data-if="com" style="display:none">DispObj</span><span data-if="dotnet" style="display:none">DispObj</span><span data-if="python" style="display:none">disp_obj</span></a></code>, 
<code><a href="disp_color.html"><span data-if="hdevelop" style="display:inline">disp_color</span><span data-if="c" style="display:none">disp_color</span><span data-if="cpp" style="display:none">DispColor</span><span data-if="com" style="display:none">DispColor</span><span data-if="dotnet" style="display:none">DispColor</span><span data-if="python" style="display:none">disp_color</span></a></code>
</p>
<h2 id="sec_see">参考其它</h2>
<p>
<code><a href="open_window.html"><span data-if="hdevelop" style="display:inline">open_window</span><span data-if="c" style="display:none">open_window</span><span data-if="cpp" style="display:none">OpenWindow</span><span data-if="com" style="display:none">OpenWindow</span><span data-if="dotnet" style="display:none">OpenWindow</span><span data-if="python" style="display:none">open_window</span></a></code>, 
<code><a href="reset_obj_db.html"><span data-if="hdevelop" style="display:inline">reset_obj_db</span><span data-if="c" style="display:none">reset_obj_db</span><span data-if="cpp" style="display:none">ResetObjDb</span><span data-if="com" style="display:none">ResetObjDb</span><span data-if="dotnet" style="display:none">ResetObjDb</span><span data-if="python" style="display:none">reset_obj_db</span></a></code>, 
<code><a href="set_paint.html"><span data-if="hdevelop" style="display:inline">set_paint</span><span data-if="c" style="display:none">set_paint</span><span data-if="cpp" style="display:none">SetPaint</span><span data-if="com" style="display:none">SetPaint</span><span data-if="dotnet" style="display:none">SetPaint</span><span data-if="python" style="display:none">set_paint</span></a></code>, 
<code><a href="set_lut.html"><span data-if="hdevelop" style="display:inline">set_lut</span><span data-if="c" style="display:none">set_lut</span><span data-if="cpp" style="display:none">SetLut</span><span data-if="com" style="display:none">SetLut</span><span data-if="dotnet" style="display:none">SetLut</span><span data-if="python" style="display:none">set_lut</span></a></code>, 
<code><a href="paint_gray.html"><span data-if="hdevelop" style="display:inline">paint_gray</span><span data-if="c" style="display:none">paint_gray</span><span data-if="cpp" style="display:none">PaintGray</span><span data-if="com" style="display:none">PaintGray</span><span data-if="dotnet" style="display:none">PaintGray</span><span data-if="python" style="display:none">paint_gray</span></a></code>, 
<code><a href="scale_image.html"><span data-if="hdevelop" style="display:inline">scale_image</span><span data-if="c" style="display:none">scale_image</span><span data-if="cpp" style="display:none">ScaleImage</span><span data-if="com" style="display:none">ScaleImage</span><span data-if="dotnet" style="display:none">ScaleImage</span><span data-if="python" style="display:none">scale_image</span></a></code>, 
<code><a href="convert_image_type.html"><span data-if="hdevelop" style="display:inline">convert_image_type</span><span data-if="c" style="display:none">convert_image_type</span><span data-if="cpp" style="display:none">ConvertImageType</span><span data-if="com" style="display:none">ConvertImageType</span><span data-if="dotnet" style="display:none">ConvertImageType</span><span data-if="python" style="display:none">convert_image_type</span></a></code>, 
<code><a href="dump_window.html"><span data-if="hdevelop" style="display:inline">dump_window</span><span data-if="c" style="display:none">dump_window</span><span data-if="cpp" style="display:none">DumpWindow</span><span data-if="com" style="display:none">DumpWindow</span><span data-if="dotnet" style="display:none">DumpWindow</span><span data-if="python" style="display:none">dump_window</span></a></code>
</p>
<h2 id="sec_module">模块</h2>
<p>
Foundation</p>
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